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Communication: FOURTH PERIOD

A randomized 25 question test from a pool of 761 questions, good luck!
There are several common components of signal converters. Which one is best described as connecting the input signal of one device, with the converter itself?
The OSI model describes how a network should be arranged. Which of the layers below concern network topologies the most?
There are many versions of Modbus, one of those is Modbus RTU. Which of the answers below correctly orders the components of the Modbus RTU frame?
In a typical GUI, values take one of four generic indicators. Which of the indicators below would best represent the image below?
IPv4 network classes can also be defined by the IP address they use. Which of the answers corresponds best to the address in row "G"?
RS-232 to USB is the best example of which of the following converters?
Which of the answers below best represents the recommended standard that uses a balanced transmission system?
In a typical GUI, values take one of four generic indicators. Which of the indicators below would best be used with analog values that require a significant degree of accuracy?
IPv4 network classes can also be defined by the default subnet masks that they use. If the subnet mask was 255.0.0.0, which of the classes below would be used?
Which of the components below best represents the letter "A"?
There are several data access methods used to transmit data. Which of the answers below can be described as a method that systematically allows for devices to initiate communication?
Subnet masks in IPv4 are used to divide an existing network. A class B network with 2 nodes, one with an IP address of 128.0.0.1 and a mask of 255.255.0.0. Which of the answers below reflects the address the other node must have for the two nodes to communicate?
Modbus has standard command codes to allow the master to access information from it's slaves. Which of the commands below would be used to write the contents of a holding register to the slave device
HMI networks are needed to expand or contract as required over their lifetime of use. Which of the networking types below will solve scalability, but is still limited because of multiple DA servers and duplication of information requiring an overuse of bandwidth?
The installation of a SCADA system has several difficulties associated with it. Which of the challenges below would be best defined as one that implements two separate communication systems to ensure redundancy for critical processes?
Which of the messaging types below is best described as independent communication with the scanner module initiated by the properly configured field device?
A DCS collects a lot of data during the course of operating. Which of the terms below would best describe the database that contains the value of all the parameters and tags, as well as all the programming and the DCS configuration?
There are numerous threats to the security of a DCS. Which of the security measures below would use a password on the BIOS to prevent unauthorized changes?
A DCS collects a lot of data during the course of operating. Which of the answers below best represents the number of databases commonly used in a DCS?
In a typical GUI, values take one of four generic indicators. Which of the indicators below would best used where discrete data needs to be provided, but a simple colour change will suffice?
In a typical GUI, values take one of four generic indicators. Which of the indicators below would best represent the image below?
Which of the error detection methods below best relates to an "effectiveness of 90%"?
There are several different network access methods available to wireless Ethernet. Which of the methods below is the one used by wireless Ethernet?
Data communication in a DCS takes the form of various net works. Which of the networks below connects to servers that share business data?
The quality of a OUT parameter status field has several different classifications. Which of the classifications below can be described as the block does not support a cascade path and the value quality is good?